Markdown code samples line annotations broken with JSX

[norswap]

Example:

import React from 'react'
import ReactDOM from 'react-dom/client'
import { HappyWalletProvider } from '@happy.tech/react' // [!code focus]

ReactDOM.createRoot(document.getElementById('root')).render(
    <HappyWalletProvider> // [!code focus]
        {/* <YourApp /> */}
    </HappyWalletProvider> // [!code focus]
)

Result:

IIRC this used to work as expected in previous versions, but I'm not 100% sure.

[xx1124961758]

#299